If a passenger wants to buy a ticket for a minor traveling alone， you should：

If a passenger wants to buy a ticket for a minor traveling alone， you should：
A.Sell the ticket without any questions.
B.Explain the unaccompanied minor policy， procedures， and any additional charges.
C.Refuse to sell the ticket.
D.Let the minor travel alone without proper arrangements.
正确答案：B
试题解析：对于未成年人独自旅行，航空公司有专门的无人陪伴儿童政策和相关程序，且可能会收取额外费用，需要向购票者详细说明。